| Watford to Bagnolet | 229.08 mi (368.67 km) |
| Watford to Bagnols-sur-Ceze | 567.08 mi (912.62 km) |
| Watford to Bailleul | 149.58 mi (240.73 km) |
| Watford to Balma | 562.74 mi (905.64 km) |
| Watford to Bar-le-Duc | 316.37 mi (509.15 km) |
| Watford to Barentin | 157.37 mi (253.26 km) |
| Watford to Basse-Goulaine | 310.49 mi (499.68 km) |
| Watford to Bastia | 770.94 mi (1,240.70 km) |
| Watford to Bayeux | 164.75 mi (265.14 km) |
| Watford to Bayonne | 566.39 mi (911.51 km) |
| Watford to Beaucaire | 590.28 mi (949.97 km) |
| Watford to Beauchamp | 215.15 mi (346.25 km) |
| Watford to Beaumont | 437.51 mi (704.10 km) |
| Watford to Beaumont-sur-Oise | 209.94 mi (337.87 km) |
| Watford to Beaune | 397.13 mi (639.12 km) |
